Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Quasiparticle Spectra, Charge-Density Waves, Superconductivity, and Electron-Phonon Coupling in 2H-NbSe2
 

Summary: Quasiparticle Spectra, Charge-Density Waves, Superconductivity,
and Electron-Phonon Coupling in 2H-NbSe2
T. Valla,* A.V. Fedorov,
and P. D. Johnson
Department of Physics, Brookhaven National Laboratory, Upton, New York, 11973-5000, USA
P-A. Glans, C. McGuinness, and K. E. Smith
Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
E.Y. Andrei
Department of Physics, Rutgers University, 126 Frelinghuysen Road, Piscataway, New Jersey 08854, USA
H. Berger
Institute of Physics of Complex Matter, EPFL, Lausanne, Switzerland
(Received 18 August 2003; published 24 February 2004)
High-resolution photoemission has been used to study the electronic structure of the charge-density
wave (CDW) and superconducting dichalcogenide, 2H-NbSe2. From the extracted self-energies,
important components of the quasiparticle interactions have been identified. In contrast to previously
studied TaSe2, the CDW transition does not affect the electronic properties significantly. The electron-
phonon coupling is identified as a dominant contribution to the quasiparticle self-energy and is shown to
be very anisotropic (k dependent) and much stronger than in TaSe2.
DOI: 10.1103/PhysRevLett.92.086401 PACS numbers: 71.18.+y, 71.45.Lr, 79.60.i
The family of layered 2H dichalcogenides represents

  

Source: Andrei, Eva Y. - Department of Physics and Astronomy, Rutgers University

 

Collections: Materials Science; Physics